AMD Socket-AM2: Same Performance, Faster Memory, Lower Power
by Anand Lal Shimpi on May 23, 2006 12:14 PM EST- Posted in
- CPUs
Through regular advances in process technology, AMD has also been able to reduce the power consumption of the entire X2 line on Socket-AM2. Now all AM2 X2 parts feature an 89W TDP, whereas previously the higher model number X2s were all 110W parts. AMD confirmed that the lower power consumption would also affect newer fabbed Socket-939 X2s, however AMD will not be changing the TDP ratings on those chips.
On top of reducing power consumption for the Athlon 64 X2 line, Socket-AM2 will also be home to AMD's new Energy Efficient processors. Through the same sort of TDP targeting that is used to manufacture energy efficient Opteron processors, you will now be able to pay a premium and purchase cooler running Athlon 64, X2 and Sempron AM2 processors. The clock speeds and model numbers remain the same, but these new processors will either carry an Energy Efficient logo indicating a 65W TDP or an Energy Efficient Small Form Factor logo that indicates a 35W TDP.
The entire list of Energy Efficient and EE SFF CPUs is listed below:
| CPU | TDP | Price | Premium |
| AMD Athlon 64 X2 4800+ Energy Efficient | 65W | $671 | +$26 |
| AMD Athlon 64 X2 4600+ Energy Efficient | 65W | $601 | +$43 |
| AMD Athlon 64 X2 4400+ Energy Efficient | 65W | $514 | +$44 |
| AMD Athlon 64 X2 4200+ Energy Efficient | 65W | $417 | +$52 |
| AMD Athlon 64 X2 4000+ Energy Efficient | 65W | $353 | +$25 |
| AMD Athlon 64 X2 3800+ Energy Efficient | 65W | $323 | +$20 |
| AMD Athlon 64 X2 3800+ Energy Efficient Small Form Factor | 35W | $364 | +$61 |
| AMD Athlon 64 3500+ Energy Efficient Small Form Factor | 35W | $231 | +$42 |
| AMD Sempron 3400+ Energy Efficient Small Form Factor | 35W | $145 | +$48 |
| AMD Sempron 3200+ Energy Efficient Small Form Factor | 35W | $119 | +$32 |
| AMD Sempron 3000+ Energy Efficient Small Form Factor | 35W | $101 | +$24 |
For anywhere from $20 - $60 over their 89W and 62W counterparts, you can now have 65W or 35W Energy Efficient AM2 CPUs. The price premium is tacked onto the processors because these lower wattage parts don't yield at the same rate as the higher wattage CPUs, and thus require a higher price to make up for the decrease in yield. But honestly, the premium on a lot of the CPUs is small enough that we can't help but recommend them (assuming the real world reduction in power is in line with AMD's reduction in TDP rating).
The Energy Efficient Small Form Factor Athlon 64 X2 3800+ at a mere 35W (less than half the TDP of the standard X2 3800+) is particularly interesting to us, but unfortunately we'll have to wait before being able to provide you all with power measurements. While all regular AM2 CPUs are available beginning today, the new Energy Efficient models won't be available in the channel until sometime in June. AMD did not have enough samples on hand to even provide us with one in time for publication, citing extreme OEM demand as the reason for supply being so tight. Hopefully when these CPUs do hit the channel we won't see any sort of price gouging as they are extremely attractive.
There are of course a long list of of new motherboards and chipsets with support for Socket-AM2, but we'll save the deep dive on both of those topics for some of our other articles in the works. Later today you'll be able to read all about NVIDIA's new nForce 500 platform, later in the week you'll see what ATI has to offer for AM2 and then next week we'll have our first roundup of Socket-AM2 motherboards.
The Test
| CPU: | AMD Athlon 64 FX-62 (Socket-AM2) AMD Athlon 64 FX-60 (Socket-939) AMD Athlon 64 X2 5000+ (Socket-AM2) AMD Athlon 64 X2 4000+ (Socket-AM2) AMD Athlon 64 X2 3800+ (Socket-AM2) Intel Pentium Extreme Edition 965 Intel Pentium D 960 Intel Pentium D 950 |
| Motherboard: | ASUS A8N32-SLI (Socket-939) ASUS M2N32-SLI (Socket-AM2) Intel D975XBX |
| Chipset: | NVIDIA nForce4 SLI x16 NVIDIA nForce 590 SLI |
| Chipset Drivers: | nForce 9.34 Beta |
| Hard Disk: | Seagate 7200.9 300GB SATA |
| Memory: | Corsair XMS2 DDR2-800 4-4-4-12 (1GB x 2) OCZ DDR-400 2-2-2 (1GB x 2) |
| Video Card: | NVIDIA GeForce 7900 GTX |
| Video Drivers: | NVIDIA ForceWare 91.27 Beta |
| Desktop Resolution: | 1280 x 1024 - 32-bit @ 60Hz |
| OS: | Windows XP Professional SP2 |
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mino - Tuesday, May 23, 2006 - link
2 options:1) Quad-core K8 (on 65nm)
2) High-speed 65nm DC's(improbable)
BTW what I understand FX-64 is on the way in a few months(july-august). Seems rev. F cores could handle 3.0, just 125W TDP may be the issue.
peternelson - Tuesday, May 23, 2006 - link
Well, I don't think it's a QUAD CORE K8 (aka "Deerhound") because that is not due until late 2007.
And dualcore K8L is not until 1H/2007.
We need to choose something happening THIS year.
mino - Wednesday, May 24, 2006 - link
Actually AMD can made Quad-core CPU's even on 90nm if they need to. The core will be huge, yields poor but IMHO 2.2G Quad at 90nm is possible within 125W TDP.Also AFAIK AMD has delayed 65nm at least for a quarter intentionally since what they need now is capacity on 90nm. They could not afford any (even short-term) production reduction at this moment. Provided in 3Q/06 FAB 36 is up and running at 10k starts the could afford to dedicate some of them for some high-end opterons and FX's.
Furen - Wednesday, May 24, 2006 - link
http://img.clubic.com/photo/00119525.jpg">http://img.clubic.com/photo/00119525.jpgLook at that and tell me how you can possibly fit twice that (90nm dual-core) in one package. Dual-core CPUs are huge to begin with, doubling the number of cores would probably require a pretty big drop in L2 sizes (think 256KB per core...). AMD still is production limited and designing a quad-core chip without going to 65nm would pretty much doom it to being a VERY low-volume part. Heck, Intel's Conroe is huge as well, it's just on a smaller process (the 160sq. mm die size would correspond to something like 300+sq. mm on the 90nm process).
jones377 - Tuesday, May 23, 2006 - link
It's called Socket FGriswold - Tuesday, May 23, 2006 - link
I dont think so. Socket F isnt really a "secret" nor a stopgap solution.peternelson - Tuesday, May 23, 2006 - link
I think we hear more about socket F in June and it launches July.But that's not what this is alluding to.
There was an announcement of a roadmap change from Q1/2007 to DECEMBER 2006.
If I remember right it was two AM2 processors on 65 nanometre process.
jones377 - Tuesday, May 23, 2006 - link
Perhaps not, but it's coming out at around that timeframe. Anything else and we would have gotten wind of it long ago.mlittl3 - Tuesday, May 23, 2006 - link
A couple of things before I give my guess about the stopgap solution...1) K8L as state above WILL HAVE microarchitectural improvements. This has been all over the internet.
2) AMD's processor pricing page states that the X2 5000+ and FX-62 will be available for both 939 and AM2. I don't know if they messed up but if not, it looks like 939 users can upgrade yet again.
Okay, here's my guess for the stopgap solution...drum roll...L3 cache. I think AMD will release a 2.8 revised FX-62 with L3 cache or an ahead of schedule 3.0 GHz FX-64 with L3 cache. Just my guess.
AllYourBaseAreBelong2Us - Tuesday, May 23, 2006 - link
The stopgap solution is the 65nm process that will allow AMD to ramp up the speed a bit more and get better TDP ratings.